CN110947265A - Load-adjustable long-throat venturi scrubber - Google Patents
Load-adjustable long-throat venturi scrubber Download PDFInfo
- Publication number
- CN110947265A CN110947265A CN201910984653.0A CN201910984653A CN110947265A CN 110947265 A CN110947265 A CN 110947265A CN 201910984653 A CN201910984653 A CN 201910984653A CN 110947265 A CN110947265 A CN 110947265A
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- Prior art keywords
- throat
- elbow
- venturi scrubber
- adjusting
- adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/10—Venturi scrubbers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
Abstract
The invention relates to a load-adjustable long-throat venturi scrubber, which comprises an elbow, a nozzle, a throat component and an adjusting conical head, wherein one end of the elbow is an air inlet, the other end of the elbow is connected with the throat component, the nozzle is arranged on the side wall of the elbow, the adjusting conical head is positioned at an airflow inlet of the throat component, and the relative position of the adjusting conical head and the airflow inlet of the throat connected with the throat component is adjustable, so that the sectional area of air entering the throat component is adjusted; the synthetic gas enters from the gas inlet, the washing water enters from the nozzle, the washing water is impacted, crushed and atomized by the high-speed gas, then the synthetic gas and the atomized washing water enter the throat pipe assembly through the adjusting conical head and the crack connected with the throat pipe assembly, and the gas flow velocity is rapidly increased and flows out in the throat pipe assembly. The invention increases the online adjustability of the venturi scrubber with the long throat, optimizes the spray nozzle injection structure of the venturi scrubber and improves the washing effect of the venturi scrubber.
Description
Technical Field
The invention relates to a load-adjustable long-throat venturi scrubber, and belongs to the technical field of petrochemical industry.
Background
The Venturi scrubber is an important dust removal device in the coal chemical industry, and has high pressure loss and good washing effect. Along with the development of the chemical industry, fine management becomes an important direction for reducing cost and enhancing competitiveness of enterprises, and along with market change, an owner can adjust the load according to market price.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects in the prior art are overcome, the load-adjustable long-throat venturi scrubber is provided, the online adjustability of the long-throat venturi scrubber is improved, and the washing effect of the venturi scrubber is improved.
The technical scheme of the invention is as follows: a load adjustable long throat venturi scrubber comprising an elbow, a nozzle, a throat assembly and an adjustment cone, wherein:
one end of the elbow is an air inlet, the other end of the elbow is connected with the throat pipe assembly, a nozzle is installed on the side wall of the elbow, the adjusting conical head is positioned at the air flow inlet of the throat pipe assembly, and the relative position of the adjusting conical head and the throat pipe inlet connected with the throat pipe assembly is adjustable, so that the sectional area of air entering the throat pipe assembly is adjusted;
the synthetic gas enters from the gas inlet, the washing water enters from the nozzle, the washing water is impacted, crushed and atomized by the high-speed gas, then the synthetic gas and the atomized washing water enter the throat pipe assembly through the adjusting conical head and the crack connected with the throat pipe assembly, and the gas flow velocity is rapidly increased and flows out in the throat pipe assembly.
The adjusting cone head comprises an adjusting rod and a closed cone, one end of the adjusting rod is fixedly connected to the top point of the closed cone, the bottom surface of the closed cone is opposite to the throat inlet of the throat assembly and is parallel to the cross section of the throat inlet of the throat assembly, the central shaft of the closed cone and the central shaft of the throat assembly are on the same straight line, a hole opposite to the inlet of the throat assembly is formed in the corner of the elbow, the other end of the adjusting rod penetrates through the hole, and the relative position of the bottom surface of the closed cone and the throat inlet of the throat assembly is adjusted by pushing and pulling the other end of the adjusting rod.
The load-adjustable long-throat venturi scrubber also comprises an adjusting mechanism, and the adjusting mechanism adjusts the position of the conical head by pushing and pulling an adjusting rod of the adjusting conical head.
The adjusting structure is a multistage sealing hand wheel, and the adjusting rod is pushed and pulled while sealing is guaranteed.
The throat pipe assembly comprises a contraction section, a throat pipe section and a boosting section which are sequentially connected, wherein the contraction section is close to the elbow side.
The length-diameter ratio (d/L) of the throat section is 6-10.
The elbow is detachably connected with the throat pipe assembly.
The nozzles are N sub-nozzles uniformly distributed on the periphery of the elbow, the included angle between the direction of the N sub-nozzles and the central line is 30-60 degrees, vortex-shaped water flow is formed, and N is larger than 1.
The sub-nozzle is a detachable nozzle.
Still be equipped with the scour protection pipe in elbow inside for the regulation pole of the adjustable conical head of protection, two spacing pipes of fixed on the scour protection pipe internal axis, the regulation pole of adjusting the conical head passes spacing pipe in proper order, can be for spacing pipe rotation or at spacing intraductal removal.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the adjustable conical head is added at the inlet of the throat pipe assembly, and the sectional area of the gas entering the throat pipe assembly is adjusted according to the actual water quantity and pressure drop, so that the gas and the liquid entering the throat pipe assembly are always kept at the optimal value, and the washing effect of the Venturi scrubber is improved.
(2) The washing water enters the washing machine in four strands through the detachable spray head, and the direction of the spray holes adopts a clockwise rotational flow direction, so that gas and liquid can be better mixed, meanwhile, the scouring force on the wall surface is reduced, and dead angles can be avoided.
(3) The sectional area of the throat pipe is variable, so that the Venturi scrubber can be suitable for running under multiple working conditions, the range of the working conditions which can be run is greatly increased, and the compatibility of products is effectively improved.
(4) The adjustable cone head can be pulled out and can be replaced when the washing is serious, so that the treatment capacity of the Venturi can be adjusted at any time, the one-time investment can be greatly reduced, and the operation cost is reduced.
Drawings
FIG. 1 is a detailed block diagram of an adjustable load long throat venturi scrubber according to an embodiment of the present invention;
in the figure, 1 is an adjusting mechanism, 2 is a connecting section, 3 is an elbow, 4 is a nozzle, 5 is an anti-scouring protection tube, 6 is a throat pipe assembly (6-1 is a contraction section, 6-2 is a throat pipe section, 6-3 is a pressure boosting section), 7 is an adjustable cone head, and 8 is a pressure measuring straight section.
FIG. 2 is a detailed structural diagram of an adjustment mechanism according to an embodiment of the present invention;
in the drawing, 2-1 is a locking nut, 2-2 is a washer, 2-3 is a thrust ball bearing, 2-4 is a support plate, 2-5 is a valve stem nut, 2-6 is an anti-rotation pointer, 2-7 is an inner hexagonal flat end set screw, 2-8 is a nut, 2-9 is a full thread stud, 2-10 is a first flat washer, 2-11 is a flange, 2-12 is a packing cavity, 2-13 is a compression sleeve, 2-14 is a packing ring, 2-15 is a packing pressure sleeve, 2-16 is a packing pressure cover, 2-17 is a nut, 2-18 is a second flat washer, 2-19 is a support rod, and 2-20 is a hand wheel;
FIG. 3 is a schematic view of a nozzle distribution according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
As shown in figure 1, the invention provides a load-adjustable long-throat venturi scrubber, which is characterized by comprising an adjusting mechanism 1, a connecting section 2, an elbow 3, a nozzle 4, a throat component 6, an adjusting conical head 7 and a pressure measuring straight section 8, wherein:
one end of the elbow 3 is an air inlet, the other end of the elbow is connected with a throat pipe assembly 6, a nozzle 4 is installed on the side wall of the elbow, an adjusting conical head 7 is positioned at an air flow inlet of the throat pipe assembly 6, and the relative position of the adjusting conical head and the throat pipe inlet connected with the throat pipe assembly 6 is adjustable, so that the sectional area of air entering the throat pipe assembly is adjusted;
the synthetic gas enters from the gas inlet, the washing water enters from the nozzle 4, the washing water is impacted, crushed and atomized by high-speed gas, then the synthetic gas and the atomized washing water enter the throat pipe assembly 6 through a crack of the adjusting conical head 7 and the connecting throat pipe assembly 6, and the gas flow velocity is rapidly increased and flows out in the throat pipe assembly.
According to the scheme, the conical head with the variable sectional area is additionally arranged at the throat pipe on the water side, when the load needs to be reduced, the conical pipe is deeply inserted into the throat pipe side, the sectional area of the throat pipe is reduced, the flow speed of the throat pipe is increased, the atomization effect of washing water is improved, and the washing capacity is improved.
The adjusting cone head 7 comprises an adjusting rod and a closed cone, one end of the adjusting rod is fixedly connected to the top point of the closed cone, the bottom surface of the closed cone is opposite to the throat inlet of the throat assembly 6 and is parallel to the cross section of the throat inlet of the throat assembly 6, the central shaft of the closed cone and the central shaft of the throat assembly 6 are on the same straight line, a hole opposite to the inlet of the throat assembly 6 is formed in the corner of the elbow 3, the connecting section 2 is arranged on the outer side of the hole, the other end of the adjusting rod penetrates through the hole, and the relative position of the bottom surface of the closed cone and the throat inlet of the throat assembly 6 is adjusted by pushing and pulling the other end of the adjusting rod.
The adjusting mechanism 1 pushes and pulls the adjusting rod of the adjusting conical head 7, so that the adjusting conical head 7 moves along the central axis of the throat pipe assembly 6, the position of the adjusting conical head 7 is adjusted, and the sectional area of gas entering the throat pipe assembly is adjusted. The bottom surface of the closed cone is adjusted according to the mass flow of the gas entering the elbow 3, and can be designed to adjust 30 percent of the sectional area of the throat section of the throat pipe assembly 6 to 110 percent.
The adjusting mechanism can be adjusted manually or remotely in a pneumatic mode. As shown in figure 2, the adjusting structure 1 comprises a locking nut 2-1, a washer 2-2, a thrust ball bearing 2-3, a support plate 2-4, a valve rod nut 2-5, an anti-rotation pointer 2-6, an inner hexagonal flat end set screw 2-7, a first nut 2-8, a full thread stud 2-9, a first flat washer 2-10, a flange 2-11, a packing cavity 2-12, a compression sleeve 2-13, a packing ring 2-14, a packing pressing sleeve 2-15, a packing pressing cover 2-16, a second nut 2-17, a second flat washer 2-18, a support rod 2-19 and a hand wheel 2-20.
In the embodiment, a hand wheel is used as an actuating mechanism, the manual mode is adopted, and the manual mode can be changed into pneumatic or electric mode to drive according to the field situation. The technical scheme mainly aims to ensure the sealing performance under the operating condition, a multi-stage sealing structure is arranged in a packing cavity, packing rings 2-14 and compression sleeves 2-13 are alternately filled, packing compression sleeves 2-15 are used for sealing, a packing gland 2-16 is arranged on the outermost layer, the packing gland and a flange 2-11 are fixedly connected through a first nut 2-8, a full-thread stud 2-9 and a first flat washer 2-10, and the adjusting rod can also freely stretch and retract while the sealing is ensured.
The support disc 2-4 is connected with the flange 2-11 through a second nut 2-17, a second flat washer 2-18 and a support rod 2-19, a valve rod nut 2-5 is embedded in the support disc 2-14, a thrust ball bearing 2-3 is arranged between the support disc and the support disc, a hand wheel 2-20 and a locking nut 2-1 are arranged on the outermost side and are in threaded fit with the adjusting rod, when the hand wheel rotates, the thrust ball bearing is used for ensuring relative rotation with the flange 2-11, the support disc 2-4 and other fixed end parts, at the moment, the adjusting rod and the hand wheel are in threaded fit, and when the hand wheel rotates, the adjusting rod can perform telescopic motion relative to the fixed end.
The parts are installed in a high-precision matching mode, the tightness is adjusted through the screw and the nut, and the specific installation mode is as follows: the packing cavity is welded outside a hole, facing the throat pipe assembly 6, of the elbow 3 through the connecting end 2, the packing cavity 2-12 penetrates through the adjusting rod, the pressing sleeve 2-13 and the packing ring 2-14 sequentially penetrate through the adjusting rod in sequence, the packing cavity 2-12 is filled, the packing pressing sleeve 2-15 is used for pressing and pressing the packing gland 2-16 through the supporting rod and the nut, and then the supporting disk 2-4, the thrust ball bearing 2-3, the flange 2-11, the anti-rotation pointer 2-6 and the hand wheel 2-20 are sequentially arranged on a shaft.
The throat pipe assembly 6 comprises a contraction section 6-1, a throat pipe section 6-2 and a pressure boosting section 6-3 which are connected in sequence.
The venturi scrubber is characterized in that a long throat pipe is adopted as a throat pipe component of the venturi scrubber, and the length-diameter ratio (d/L) of the throat pipe section is 6-10.
The elbow 3 and the throat pipe assembly 6 are detachably connected and can be connected through a flange.
As shown in fig. 3, in order to avoid the axis of the adjusting mechanism, the water side is injected in a form of a plurality of lateral nozzles, the nozzles 4 are N sub nozzles uniformly distributed on the periphery of the elbow, and the included angle between the direction of the N sub nozzles and the center line is 45 degrees, in a certain embodiment of the invention, N is 4, and the washing water enters through four detachable sub nozzles, namely, a first sub nozzle N1a, a second sub nozzle N1b, a third sub nozzle N1c and a fourth sub nozzle N1 d. Each sub-nozzle is detachable, and is convenient to clean. Still be equipped with scour protection tube 5 inside the elbow for the regulation pole of the adjustable conical head of protection, two spacing pipes of fixed on the 5 inside axes of scour protection tube, the regulation pole of adjusting conical head 7 passes spacing pipe in proper order, can be for spacing pipe rotation or at spacing intraductal removal.
The working principle of the invention is as follows:
washing water is sprayed from the first sub-nozzle N1a, the second sub-nozzle N1b, the third sub-nozzle N1c and the fourth sub-nozzle N1d, the pressure is generally 4.2MPa (G), synthetic gas enters from the gas inlet N2, the pressure is 4.0MPa (G), after passing through the detachable throat pipe assembly 6, the gas flow rate is rapidly increased, the highest flow rate of the throat pipe can reach 100m/s, and at the moment, the washing water is impacted, crushed and atomized by high-speed gas. The surface area of the liquid drop is increased sharply, and the probability of capturing fine particles is greatly improved.
After passing through the throat pipe, most particles collide with the liquid drops to finally form larger particles to enter the diffuser pipe, the flow rate of the fluid is reduced along with the increase of the sectional area of the diffuser pipe, the pressure is increased, and the gas phase and the liquid phase generate speed difference due to different masses and finally enter the washing tower to be separated through the outlet N3.
The adjusting mechanism 1 can adjust the position of the conical head, the sectional area of the inlet of the throat pipe is adjusted through the size of the conical head, the flow velocity adjusting effect is finally achieved, the area of the inlet of the throat pipe can be adjusted to 100% from 30% by the adjusting mechanism, when the conical head 7 is adjusted to move to the rightmost side, the maximum sectional area of the whole conical head completely enters the throat pipe, the sectional area of the throat pipe is minimum, the flow velocity is maximum, and the throat pipe is suitable for running under the working condition of minimum load. When the adjusting cone head 7 moves to the leftmost side of the stroke, the throat pipe is the largest sectional area at the moment, and the working condition is the working condition when the full-load operation is performed at the moment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (10)
1. The utility model provides a long choke venturi scrubber of adjustable load which characterized in that includes elbow (3), nozzle (4), choke subassembly (6) and regulation cone (7), wherein:
one end of the elbow (3) is an air inlet, the other end of the elbow is connected with the throat pipe assembly (6), a nozzle (4) is installed on the side wall of the elbow, the adjusting conical head (7) is positioned at an air flow inlet of the throat pipe assembly (6), and the relative position of the adjusting conical head and the throat pipe inlet connected with the throat pipe assembly (6) is adjustable, so that the sectional area of air entering the throat pipe assembly is adjusted;
the synthetic gas enters from the gas inlet, the washing water enters from the nozzle (4), the washing water is impacted, crushed and atomized by high-speed gas, then the synthetic gas and the atomized washing water enter the throat pipe assembly (6) through a crack for adjusting the conical head (7) and the connecting throat pipe assembly (6), and the gas flow velocity is rapidly increased and flows out in the throat pipe assembly.
2. The load-adjustable long throat venturi scrubber according to claim 1, wherein the adjusting cone (7) comprises an adjusting rod and a closed cone, one end of the adjusting rod is fixedly connected to the apex of the closed cone, the bottom surface of the closed cone faces the throat inlet of the throat assembly (6), the cross section of the adjusting rod is parallel to the section of the throat inlet of the throat assembly (6), the central axis of the closed cone and the central axis of the throat assembly (6) are in a straight line, a hole opposite to the inlet of the throat assembly (6) is formed in the corner of the elbow (3), the other end of the adjusting rod penetrates through the hole, and the adjustment of the relative position of the bottom surface of the closed cone and the throat inlet of the throat assembly (6) is realized by pushing and pulling the other end of the adjusting rod.
3. The load-adjustable long-throat venturi scrubber according to claim 1, further comprising an adjusting mechanism, wherein the adjusting mechanism (1) adjusts the position of the conical head (7) by pushing and pulling an adjusting rod of the conical head (7).
4. The load-adjustable long throat venturi scrubber according to claim 1, wherein the adjusting structure (1) is a multi-stage sealing hand wheel, which ensures sealing while pushing and pulling the adjusting rod.
5. The load-adjustable long throat venturi scrubber according to claim 1, wherein the throat assembly (6) comprises a convergent section (6-1), a throat section (6-2) and a booster section (6-3) connected in sequence, the convergent section (6-1) being close to the elbow side.
6. The adjustable load long throat venturi scrubber according to claim 5, wherein the throat section has a length to diameter ratio (d/L) of 6 to 10.
7. The load adjustable long throat venturi scrubber according to claim 1, wherein the elbow (3) is removably connected to the throat assembly (6).
8. The load-adjustable long throat venturi scrubber according to claim 1, wherein the nozzles (4) are N sub-nozzles uniformly distributed around the elbow, the direction of the N sub-nozzles forms an included angle of 30-60 ° with the center line to form a vortex-shaped water flow, and N is greater than 1.
9. The adjustable load long throat venturi scrubber of claim 1, wherein the sub-nozzles are removable nozzles.
10. A load adjustable long throat venturi scrubber according to claim 1, wherein an anti-erosion protection tube (5) is further provided inside the elbow (3) for protecting the adjusting rod of the adjustable cone, two position limiting tubes are fixed on the inner axis of the anti-erosion protection tube (5), and the adjusting rod of the adjusting cone (7) passes through the position limiting tubes in sequence and can rotate relative to the position limiting tubes or move in the position limiting tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984653.0A CN110947265A (en) | 2019-10-16 | 2019-10-16 | Load-adjustable long-throat venturi scrubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984653.0A CN110947265A (en) | 2019-10-16 | 2019-10-16 | Load-adjustable long-throat venturi scrubber |
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| Publication Number | Publication Date |
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| CN110947265A true CN110947265A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910984653.0A Pending CN110947265A (en) | 2019-10-16 | 2019-10-16 | Load-adjustable long-throat venturi scrubber |
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| CN (1) | CN110947265A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905561A (en) * | 2020-07-16 | 2020-11-10 | 无锡东方船研高性能船艇工程有限公司 | Ship dust and nitrate synergistic removal device with variable throat section of Venturi tube and removal method |
| CN112973331A (en) * | 2021-02-09 | 2021-06-18 | 北京航化节能环保技术有限公司 | Novel vertical venturi scrubber |
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| CN202733089U (en) * | 2012-06-21 | 2013-02-13 | 浙江科海仪表有限公司 | Pressure release type self-operated pressure regulator |
| CN203990192U (en) * | 2014-07-12 | 2014-12-10 | 中国石油化工股份有限公司 | Venturi spray head and Venturi scrubber |
| CN208852600U (en) * | 2018-08-26 | 2019-05-14 | 浙江杭真能源科技股份有限公司 | A kind of Venturi scrubber |
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2019
- 2019-10-16 CN CN201910984653.0A patent/CN110947265A/en active Pending
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| CN201055744Y (en) * | 2007-05-31 | 2008-05-07 | 五环科技股份有限公司 | Spray type and adjustable venturi washer in high temperature and high voltage condition |
| CN102563104A (en) * | 2012-02-04 | 2012-07-11 | 浙江科海仪表有限公司 | Self-operated sleeve regulating valve |
| CN202733089U (en) * | 2012-06-21 | 2013-02-13 | 浙江科海仪表有限公司 | Pressure release type self-operated pressure regulator |
| CN203990192U (en) * | 2014-07-12 | 2014-12-10 | 中国石油化工股份有限公司 | Venturi spray head and Venturi scrubber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905561A (en) * | 2020-07-16 | 2020-11-10 | 无锡东方船研高性能船艇工程有限公司 | Ship dust and nitrate synergistic removal device with variable throat section of Venturi tube and removal method |
| CN112973331A (en) * | 2021-02-09 | 2021-06-18 | 北京航化节能环保技术有限公司 | Novel vertical venturi scrubber |
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